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| 三轴稳定平台下提高线列探测器光学遥感仪图像空间分辨率的方法研究 | |
| 引用本文： | 郭强 许健民 陈桂林. 三轴稳定平台下提高线列探测器光学遥感仪图像空间分辨率的方法研究[J]. 红外与毫米波学报, 2005, 24(1): 39-44 |
| 作者姓名： | 郭强 许健民 陈桂林 |
| 作者单位： | 1. 中国气象科学研究院,北京,100081;国家卫星气象中心,北京,100081;中国科学院上海技术物理研究所,上海,200083 2. 国家卫星气象中心,北京,100081 3. 中国科学院上海技术物理研究所,上海,200083 |
| 基金项目： | 国家自然科学基金资助项目(40275007) |
| 摘 要： | 提出了通过改变线列探测器像元摆放方式并适当增加系统过采样率来提高三轴稳定平台下线列探测器光学遥感仪图像空间分辨率性能的技术实现方案．在建立系统工作模型的基础上，对基本递推算法和由此引入的误差扩散效应进行了定量化分析，并初步给出图像信噪比和图像空间分辨率之间的量化关系．该方案技术出发点的可行性已在SPOT-5 HRG专利技术中得到证实．在现有条件下，该技术有望率先在极轨卫星平台下得到应用． |
| 关 键 词： | 分辨率 图像信噪比 误差扩散 过采样 像元 探测器 平台 光学遥感 SPOT-5 出图 |
| 文章编号： | 1001-9014(2005)01-0039-06 |
| 收稿时间： | 2004-02-21 |
| 修稿时间： | 2004-02-21 |
STUDY ON IMPROVING IMAGE SPATIAL RESOLUTION OF OPTICAL INSTRUMENTS WITH LINEAR SENSORS IN THREE-AXIS BODY-STABILIZED PLATFORM |
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| GUO Qiang,XU Jian-min,CHEN Gui-lin. STUDY ON IMPROVING IMAGE SPATIAL RESOLUTION OF OPTICAL INSTRUMENTS WITH LINEAR SENSORS IN THREE-AXIS BODY-STABILIZED PLATFORM[J]. Journal of Infrared and Millimeter Waves, 2005, 24(1): 39-44 | |
| Authors: | GUO Qiang XU Jian-min CHEN Gui-lin |
| Abstract: | The method of improving image spatial resolution of the optical instruments with linear sensors in the three-axis body-stabilized platform was proposed by changing the sensors' relative positions as well as increasing the over-sampling ratio in some degrees. The basic iterative algorithm and the error spreading induced by the method were quantitively analyzed, and the certain relationship between the image spatial resolution and the image SNR was also presented. The technological feasibility of the method was proved by the patent technology of SPOT-5 HRG. This technology can been applied in the polar-stationary satellite platform under the current conditions. |
| Keywords: | image spatial resolution over-sampling ratio sensors' positioning error spreading image SNR |
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